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https://issues.apache.org/jira/browse/GROOVY-11276?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul King closed GROOVY-11276.
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> Generics error in method resolution
> -----------------------------------
>
> Key: GROOVY-11276
> URL: https://issues.apache.org/jira/browse/GROOVY-11276
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Affects Versions: 3.0.20, 4.0.17
> Reporter: Christopher Smith
> Assignee: Eric Milles
> Priority: Minor
> Fix For: 4.0.18, 3.0.21
>
>
> There's a chance this is a duplicate of a ticket recently fixed, but it's odd
> enough (and the message is unclear enough) that I'm reposting it.
> {code}
> Map<String, List<String>> idsForAccounts(Collection<String> persons) {
> Map<Object, Object> fromGraph = retrieve()
> // workaround for buggy database implementation follows
> new HashMap<String, List<String>>().tap { result ->
> putAll(fromGraph as Map<String, List<String>>)
> persons.forEach {
> if (!result.containsKey(it)) {
> result.put(it, emptyList())
> }
> }
> }
> }
> {code}
> {code}
> [Static type checking] - Cannot find matching method
> java.util.HashMap#put(java.lang.String, java.util.List<#T>). Please check if
> the declared type is correct and if the method exists.
> @ line 73, column 21.
> result.put(it, emptyList())
> ^
> {code}
> Update: Using a type witness as {{Collections.<String> emptyList()}} works.
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